Back to Search
Start Over
Preparation of a high-concentration nm-size ceramic silicon carbide slurry for the ICP-OES determination of ultra-trace impurities in a sample
- Source :
- Journal of Analytical Atomic Spectrometry. 25:1482
- Publication Year :
- 2010
- Publisher :
- Royal Society of Chemistry (RSC), 2010.
-
Abstract
- A high-concentration with low viscosity ceramic silicon carbide (SiC) slurry prepared for ICP-OES determination of ultra-trace impurities is described in this paper. Good fluidity can be kept up to the slurry concentration as high as 30% (m v−1) by adding 2% polyethylene imine (PEI) as a dispersant at pH 4.0. Stability of the high content slurry of nm-size SiC is characterized by zeta potential measurement and viscosity measurement, and medium pH is experimentally optimized. The analysis can be calibrated using simple aqueous standards in case a high-concentration slurry is nebulized. Owing to extremely low blanks and unusually highly slurry concentration (20% m v−1), extraordinarily low limits of detection ranging from 2 (Mn, Ti) to 100 (Al) ng g−1 could be achieved.
Details
- ISSN :
- 13645544 and 02679477
- Volume :
- 25
- Database :
- OpenAIRE
- Journal :
- Journal of Analytical Atomic Spectrometry
- Accession number :
- edsair.doi...........f0f48cc945947b548aaeb8610c1a57f0